<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
	<title></title>
</head>
 <style type="text/css">
*{margin: 0px;padding: 0px;}
li{list-style: none;}
a{text-decoration: none;color: black;}

 #box{/*头部大框架*/
     width: 1100px;
     margin:auto;
     padding-top:10px; 
     height: 30px;
 }
 .nav>li{
     float: right;
     width: 100px;
     height: 30px;
     position: relative;
     padding-bottom: 10px;
     margin-left:10px;
 }
 .nav>li:hover>.nav_2{
    display: block;
   }
 .nav>li>a{
  display: block;
  height: 30px;
  text-align: center;
  line-height: 30px;
 }
 .nav>li>a:hover{
  background-color: #ff0000;
  border-radius: 5px;
  color: #fff;
 }
 .nav>.boxOneLi{
  background-color: #ff0000;
  border-radius: 5px;
  padding-bottom: 0;
 }
 .boxOneLi>a{
    color: #fff;
 }
 .nav_2{
  width: 140px;
  border:1px solid #666;
  position: absolute;
  left: -20px;
  top: 40px;
  display: none;
  background-color: #fff;
 }
 .nav_2>dd{
  background-color: #f0f0f0;
  text-align: center;
  line-height: 30px;
  margin-top: 1px;
 }
 .nav_2>dd:hover{ 
    background-color: #fff;
 }


 </style>
<body>

<div id="box">
 

  	 <ul class="nav">
      	 	<li>
      	 	    <a href="#">产品服务</a>
      	 	</li>
      	 	<li>
       	 	    <a href="#">解决方案</a>
      	 	</li>
      	 	<li>
      	 	    <a href="#">新闻中心</a>
          </li>
      	 	<li>
      	 	    <a href="#">案列展示</a>
      	 	</li>
      	 	<li>
      	 	    <a href="#">品牌融都</a>
                <dl class="nav_2">
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 </dl>  
      	 	</li>
      	 	<li>
      	 	    <a href="#">关于融都</a>
                 <dl class="nav_2">
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 <dd>产品服务</dd>
                 </dl>  
      	 	</li>
      	  <li class="boxOneLi"><a href="#">首页</a></li>
  	 </ul>



</div>
</body>
</html>